Source: libnova
Version: 0.14.0-2
Severity: normal
Tags: patch
Dear Maintainer,
The CFLAGS hardening flags are missing because ./configure
overwrites them. For more hardening information please have a
look at [1], [2] and [3].
The attached patch fixes the issue, if possible it should be sent
to upstream.
To check if all flags were correctly enabled you can use
`hardening-check` from the hardening-includes package and check
the build log (for example with blhc [4]) (hardening-check
doesn't catch everything):
$ hardening-check /usr/bin/libnovaconfig /usr/lib/x86_64-linux-gnu/libnova-0.14.so.0.0.0
/usr/bin/libnovaconfig:
Position Independent Executable: no, normal executable!
Stack protected: no, not found!
Fortify Source functions: yes
Read-only relocations: yes
Immediate binding: no not found!
/usr/lib/x86_64-linux-gnu/libnova-0.14.so.0.0.0:
Position Independent Executable: no, regular shared library (ignored)
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: no not found!
(Position Independent Executable and Immediate binding is not
enabled by default.)
Use find -type f \( -executable -o -name \*.so\* \) -exec
hardening-check {} + on the build result to check all files.
Regards,
Simon
[1]: https://wiki.debian.org/ReleaseGoals/SecurityHardeningBuildFlags
[2]: https://wiki.debian.org/HardeningWalkthrough
[3]: https://wiki.debian.org/Hardening
[4]: http://ruderich.org/simon/blhc/
--
+ privacy is necessary
+ using gnupg http://gnupg.org
+ public key id: 0x92FEFDB7E44C32F9
Description: Use CFLAGS from environment (dpkg-buildflags).
Necessary for hardening flags.
Author: Simon Ruderich <simon@ruderich.org>
Last-Update: 2012-05-04
--- libnova-0.14.0.orig/configure.in
+++ libnova-0.14.0/configure.in
@@ -63,7 +63,7 @@ AC_CHECK_FUNCS([acosl])
AC_CHECK_FUNCS([asinl])
AC_CHECK_FUNCS([atan2l])
-CFLAGS=-Wall
+CFLAGS="$CFLAGS -Wall"
# Checks for header files.
AC_HEADER_STDC
--- libnova-0.14.0.orig/configure
+++ libnova-0.14.0/configure
@@ -12529,7 +12529,7 @@ fi
done
-CFLAGS=-Wall
+CFLAGS="$CFLAGS -Wall"
# Checks for header files.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
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